Forging-machine.



Patented Feb. 21, 191 1.

m M 3%; T v z i 2 i y H b M c. E. REED. FORGING MACHINE. APYLICATION PI LED SEPT. 24, 1910.

. 0m mm o m C. E. REED.

rename mama LPILIDATIOR PI Patented Feb. 21,1911 2 8HBBT8-8HEET 2.

CHARLEE; E. REED, DF GI OF CHICAGO, 133111155 on ons {1 Application filed Feptcmhcr 2%, with:

e; consent;

snore;

Specification Letters Fiat-ems. jlih-ien'i etl Felh 2 1, 19 i1 enial No. 583,548.

. chines of the general type shown and described inreissue Letters lhitcnt Ii'o granted to me September Qtlth, 1896.

In the occonipnnying; drnu'ingsl5'iqure 1, is a partly hrolren side elevation of my improved machine; Fig. e hrolzen plan sec tion taken on line :2 in l; l 3, a broken and enlarged section taken on line 3 in Fig. 2, and showing an unfinished punch in positioin in. the muchinc, to he on crated upon; Fig l, a View of ports illustrated in. Fig, 3, showing the relative posi tions they occupy upon the completion of on operation; Fig. 5', a perspective View of a punch blank; and Fig. 6. a similar View of punch formed from the blank and tempered in the machine.

It may be stated that tl punch hlanl's shown in Fig. 5 are. in practice, about s vencighths of an inch in. length and one-eightl of an inch in diameter, with a smell soclte in one end;

Theprescnt machine is employed to soften and expand into frusto-conicul form the socketed end of the blank illustrated in Fig. 6, and then temper said end.

The machine is secured upon u bench 6, and has a frame consistu base 7', neor 8, and head 9. l through the losse 7, is on opening forn'iing :i sent for a nietal'socket-piece 10, which holds 1 seer the metal (lie-l)lock11. This die-bloclchus on opening, 12 through 1t, the upper end oi" which is expanded, as indicated at 13. l ke tending through the bench or platform 6 1s n, headed plnn er 14, llllVlIlfZ a socket L3 in its upper end. The socket 15 forms 21 sent for a spring 16 supporting a headed pm 1? ward (21c thcr lry means of operating hondles o s 21 "fulcriuned on the base at;

the poinrs 2:4, and suitably insulated from the llloclcs the .irzune and from each other. Un the guides 2th in the positions shown, are sing pins which limit. the movement of the hmu'lles 21 toward each other. Extending to the electrodes are flexible llillllllfll ii" ileudinfi from u suitable electric cur- .3 rent poly, gucilin'zzl ly am alternating current low pressure and high current flow Sliding in the ll f'fit 9 a vertical plunger 25 ac d to hold :1 pointed slnuging; or expuudinl: 'llC 26 The distance of downward movement of the plunger :25 may he rcggulntcd h on mljusting; screw 2?. which strikes "he to of the head 9. Extending through the plunger is on opening; 2 into which projects the end of the short arm of :1 lever 29 fulcrnmed at. 30. (ln the long arm of the lc *er 99 is an adjustable weight 31. 32 is a tre: (lle fulcrumed between its ends upon a lrnger 33. The rear end of the trendle is connected with t 18 long arm 'of the lever 29 by means of a link 3%. Fastcned against the under side oil. the platform (3 is a bracket 35 forming" a guide "tor u plunger 36 upon the upper end of a rod 37. The rod 37 is connected at its lower end with the trcodle 32;

in operation, s blank 38 is placed in the receiver or die-l loclr 1L as shown in Fig. 3, to rest upon the upper end of the plunger pin 1? This positions the upper end portion of the blank intermediate the electrodes 38. The operator then moves the handles 21 toward each other to the stops 23, causing the electrodes to he moved against opposite sid the hlnnlr, closing the circuit and mHClLl V generating heat due to contact resconce, suilicient to raise the end portion of the hlzu lrto the desired tenipei ntnre. Thereupon the handles are swung away from each other and the operator beers downward upon the trendle The swinging of the treedlc causes the plunger to be lowered and the expanding (lie 52s to enter the top socket 8 in the hlnnk and press the blank and pin 1.? down un'sins't the resistance of the spring 16 until the pin strikes the louse of the socket. if Further pressure exerted upon the trczulle causes the expanding die 26 to expend the end portion of the punch into the flaring socket 13, as :indiczrted in Fig. i, thus producing the completed punch illusl trated in Fig. 6. The heat of the upper end i of the punch is quickly absorbed by the' metal of the die-block 11, thus suitably teml pering the end portion of the punch. When the treadle is released by the operator it is returned to initial position by the weight% 31, causing the plunger 25 to be raised and the plunger head 36 to mess upwardly 1 againstthe pin 17 to raise the latter to normal position. and at the same time discharge the finished punch. l t will be noted thatl after the socketed end-portion of the blank trodes and the latter are withdrawn, down ward pressure upon the treadle causes the die 26 to press the blank downward and expand its upper end portion quickly against the flaring wall portion 13 of the die-block opening 1; before any material cooling and 5 hardening of the said endportion ot' the blank takes place. \Vhen. however. the I blank is expanded against the wall 13, the latter absorbs heat from the blank with suf- I licient rapidity to effect the desired tenipering otthe flared cutting end of the punch. l As the machine is operated, in )ractice, the die-block and surrounding metal parts effect the proper heat-absorption and temperingl of the punches without themselves becoming heated sutliciently to require a water-jacket or other artificial cooling, means. 1 \Yhat I claim as new and desire to secure i by Letters Patent, is: 1. In a forging-machine, a pair of relatively movable electrodes, means for moving the electrodes toward and away from each 1 ,has been heated and softened by the elec i other, a die-block having an openin to receive and position a blank between te electrodes, a movable die cooperating with said die-block to shape the blank, and a blank expelling plunger in the die-block.

2. In a forging-machine, a pairof relatively movable electrodes, means for moving the electrodes toward and away from each other, a die-block having an ex ended opening to receive and position a b ank between the electrodes, a movable blank-expanding die cooperating with said die-block, and a blank-expelling plunger in the die-block.

8. In a forging-machine, a air of electrodes. manually operated hand esconnected with the electrodes for moving them toward and away from each other, a die-block having an expanded opening to receive and position a blank between the electrodes, a blank-expaiuling die cooperating with said die-block, and a treadle o )eratively connected with said blank-expan mg die to reciprocate the same.

i. In an electric tempering and shaping machine, a pair of relatively movable electrodes, means for moving the electrodes toward and away from each other, a die-block having an expanded opening to receive and position a blank between the electrodes, a movable blank expander cooperating with said die-block, and a blank expelling plunger in the die-block.

CHARLES E. REED.

1n presence of R. A. RAYMOND, R. A. SCHAEFER. 

